JP2001145422A - Roof greening mat and roof greening method using the mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roof greening mat containing plant-growing soil in the mat in a state causing little loss of the soil by running water such as rainwater. SOLUTION: The objective roof greening mat A is provided with spaces capable of holding plant-growing soil in a state causing little loss of the soil by running water such as rainwater. The mat contains a number of continuous filaments 15a made of a thermoplastic resin polymer, irregularly or regularly bending in horizontal or thickness direction while crossing with each other, having a diameter of 0.1-5 mm and extending from one end to the other end of the mat. The mat is composed of a steric net structure 15 formed by welding the numeral continuous filaments 15a at the crossing points and a flexible net member 14 attached to the front or back face of the steric net structure 15. The net member 14 and the steric net structure 15 are integrated together by winding the longitudinal string and/or the lateral string constituting the net member 14 with the continuous filaments 15a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mat for rooftop greening and a greening method, which is used on a roof of a house (house) or a building and fills the inside with soil to grow plants. The present invention relates to a rooftop greening mat having a function of preventing the outflow (runoff) of the soil due to running water such as rainwater, and a greening method using the mat.

[0002] The "mat" in the present invention also includes "sheet-like".

[0003]

2. Description of the Related Art In recent years, greening activities in towns have been progressing here and there. That is, in recent years, the greening (vegetation) of the town has been reduced in recent years, and it is becoming more difficult for people living and working there to relax their minds. The government and local governments are recommending tree-planting and tree-planting in order to revive the scarce greenery, and it has been proposed to grant subsidies to companies that promote greening.

[0004] Therefore, as one means of greening a city, an attempt has been made to grow plants on the roof of a house or a building, thereby promoting greening of the city.

Conventionally, as a greening method on a roof, for example, a thick base material spraying method of simply spraying a soil containing seeds and fertilizer onto a roof has been performed.

However, according to this method, there is a problem that the soil is easily washed away by rainwater or wind and rain, and the greening does not proceed as much as desired.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a rooftop greening system in which soil filled therein for growing plants is less likely to be washed away by running water such as rainwater. And a greening method using the rooftop greening mat.

[0008]

The rooftop greening mat according to claim 1 (hereinafter simply referred to as "mat") is provided with a space capable of holding soil for growing plants, and is filled in the space. A rooftop greening mat that can prevent soil from flowing out by running water such as rainwater, and a large number of continuous filaments having a diameter of 0.1 to 5 mm made of a thermoplastic polymer cross each other. Each is irregularly or regularly bent in the horizontal direction and the thickness direction, and as a whole,
Each of the continuous filaments extends from one side to the other side in substantially the same direction, and the multiplicity of continuous filaments is formed of a three-dimensional net-like structure which is fused at points where they cross each other.

The mat according to claim 2 is provided with a space capable of holding soil for growing plants, and a mat for rooftop greening capable of preventing the soil filled in the space from flowing out by running water such as rainwater. And a large number of continuous filaments having a diameter of 0.1 to 5 mm made of a thermoplastic resin polymer,
While intersecting each other, they are bent irregularly or regularly in the horizontal direction and the thickness direction, respectively, and generally extend from one side to the substantially same direction on the other side, and the plurality of continuous filaments are A three-dimensional network structure fused at a point where they intersect each other, and a flexible net body attached to one of the front and back sides of the three-dimensional network structure, wherein the continuous linear body is The net and the three-dimensional net-like structure are integrated by winding up the vertical and / or horizontal streaks constituting the net.

[0010] The mat according to claim 3 is provided with a space capable of holding soil for growing plants, and a mat for rooftop greening capable of preventing the soil filled in the space from flowing out by running water such as rainwater. And a large number of continuous filaments having a diameter of 0.1 to 5 mm made of a thermoplastic resin polymer,
While intersecting each other, they are bent irregularly or regularly in the horizontal direction and the thickness direction, respectively, and generally extend from one side to the substantially same direction on the other side, and the plurality of continuous filaments are A three-dimensional network structure fused at points where they cross each other, and a nonwoven fabric attached to one of the front and back sides of the three-dimensional network structure.

According to a fourth aspect of the present invention, there is provided the mat according to the first aspect, wherein a size of the mesh in the net body is 1 to 10 cm × 1 to 10 cm.

According to a fifth aspect of the present invention, there is provided the mat according to any one of the first to third aspects, wherein the three-dimensional network structure has a thickness of 1 to 5 cm, a porosity of 90 to 98%, and a void diameter of 3 to 3.
cm or less.

The greening method according to the sixth aspect is the first to fifth aspects.
The roofing greening mat according to any one of the above, laying after laying a waterproof sheet on the upper surface of the base which is the roof upper surface, and then filling the soil with seeds or seedlings in the voids in the roofing greening mat Or, after filling the soil, sowing seeds or planting seedlings.

[Operation] The rooftop greening mat according to the first aspect is laid, for example, on an inclined surface of a roof. This mat for rooftop greening is relatively lightweight because the three-dimensional network structure is formed of a continuous filament having a diameter of 0.1 to 5 mm made of a thermoplastic resin polymer, and is also rooftop because it is flexible. Laying work on an inclined surface is easy. When the continuous filament is less than 0.1 mm in diameter, the resulting three-dimensional network structure has poor mechanical strength,
There arises a problem that it is difficult to obtain a desired gap diameter (described later). Further, when the continuous filaments have a diameter of more than 5 mm, the rigidity of the obtained three-dimensional network structure is increased, and the workability and handleability are deteriorated. A preferred range of the diameter of the continuous filament is 0.5 to 3 mm.

In this rooftop greening mat, soil is filled inside a three-dimensional network structure having a predetermined thickness. In this soil, fertilizers and seeds can be mixed in some cases, and plant seedlings and lawns can be used in combination. The filled soil is firmly held in the space of the three-dimensional network structure by a large number of continuous filaments that are intertwined with each other to form the three-dimensional network structure. Thereby, the outflow of the soil due to running water such as rainwater can be minimized.

Seeds naturally dropped on soil (flying seeds)
Alternatively, seeds (or seedlings) artificially mixed into the soil begin to grow, and grow in the soil while the roots are entangled with a large number of continuous striatum constituting the three-dimensional network structure. As a result, the soil retention effect is further enhanced (the soil outflow prevention effect is improved), and the grown plants are less likely to be washed away even when exposed to running water such as rainwater.

The rooftop greening mat according to the second aspect has the following effects in addition to the mat according to the first aspect. That is, in the mat according to claim 2,
Since the flexible net body is attached to one of the front and back surfaces of the three-dimensional network structure (adhesion with an adhesive, heat fusion, and the like), the mechanical strength of the three-dimensional network structure is improved. Moreover, the net body is not simply adhered to the surface of the three-dimensional net-like structure, but is formed by winding the continuous wire around the vertical and / or horizontal streaks constituting the net. Since they are integrated, there is no worry that the net body will be peeled off from the three-dimensional net-like structure.

Further, since the rooftop greening mat of the present invention is provided with a flexible net body, the net is not affected by the force exerted on the three-dimensional net-like structure in the width direction (spreading direction). The body exhibits excellent resistance (that is, the elongation of the three-dimensional network structure is drastically suppressed by the net body), and the workability is improved. That is, when laying a large number of the rooftop greening mats of the present invention on an inclined surface on a rooftop, several workers are already laying on the rooftop greening mats already laid on the inclined surface while the other rooftop greening mats are laid. Are laid out vertically and horizontally, but when the worker puts on the rooftop greening mat, the rooftop greening mat is inevitably subjected to force in the width direction (spreading direction) due to the weight of the person, Attempts to extend below the surface. However, since the rooftop greening mat of the present invention includes the net body as described above, even if a person is placed on the mat laid on the inclined surface, the extension in the downward direction is suppressed.

Further, the net attached to the three-dimensional network structure is not made of a rigid material such as a metal wire, but is made of a material having flexibility such as a natural fiber or a synthetic resin fiber. Therefore, it can easily follow even the subtle irregularities and corners of the laying ground (adhesion is improved), and excellent workability can be obtained. That is, when the net body is made of a metal wire (wire mesh), the worker applies force to the net body from outside before laying the unevenness and corners of the laying ground. It is necessary to re-form the mat to the shape suitable for the roof shape.However, in the mat for rooftop greening of the present invention, since the net body has flexibility, the mat is used for the roof. Just by laying, it is not necessary to naturally follow the shape of the laying ground (closely adhere to the laying ground) and adjust the shape to the shape of the laying ground before laying.

The mat for rooftop greening according to the third aspect is different from the mat according to the second aspect in that the net is replaced with a nonwoven fabric. The mat according to claim 3 has the following effects in addition to the mat according to claim 1. That is, since the nonwoven fabric is attached to one of the front and back surfaces of the three-dimensional network structure, the mechanical strength of the three-dimensional network structure is improved. This nonwoven fabric is preferably heat-bonded and heat-bonded to one surface of the three-dimensional network structure.

Further, since the nonwoven fabric is provided, for example, rainwater that has passed through the three-dimensional network structure in the thickness direction is taken into the nonwoven fabric, and flows inside the nonwoven fabric as a water passage. Therefore, there is no fear that the rainwater will draw (run off) the soil filled inside the three-dimensional network structure to the outside.

Further, since the rooftop greening mat of the present invention has the nonwoven fabric as described above, the nonwoven fabric is excellent in the force exerted in the direction of the width (spreading direction) of the three-dimensional network structure. (I.e., the elongation of the three-dimensional network structure is drastically suppressed by the nonwoven fabric), and the workability is improved. That is, when laying a large number of the rooftop greening mats of the present invention on an inclined surface on a rooftop, several workers are already laying on the rooftop greening mats already laid on the inclined surface while the other rooftop greening mats are laid. Are laid out vertically and horizontally, but when the worker puts on the rooftop greening mat, the rooftop greening mat is inevitably subjected to force in the width direction (spreading direction) due to the weight of the person, Attempts to extend below the surface. However, since the rooftop greening mat of the present invention includes the nonwoven fabric as described above, even if a person is placed on the mat laid on the inclined surface, the downward extension is suppressed.

The non-woven fabric to be attached to the three-dimensional net-like structure is not as rigid as a metal filament, but is flexible like a natural fiber or a synthetic resin fiber. It can easily follow corners and corners (adhesion is improved), and excellent workability can be obtained. In other words, when a metal wire (wire mesh) is formed instead of this nonwoven fabric, the unevenness and corners of the laying ground are externally applied to the metal wire by an operator before laying. It is necessary to apply force to the roof to reshape it into a shape that matches the shape of the roof.However, in the rooftop greening mat of the present invention, since the nonwoven fabric has flexibility, the mat It is not necessary to naturally follow the shape of the laying place (closely adhere to the laying place) by simply laying it on the roof, and before the laying, bother to adjust the shape to the shape of the laying place.

The thickness of the nonwoven fabric is not particularly limited,
Preferably it is 5 to 20 mm. If the thickness is less than 5 mm, the effect exerted by attaching the nonwoven fabric is poor. If the thickness is more than 20 mm, not only the effect of increasing the thickness is not particularly obtained, but also the overall thickness becomes too large to handle. Worsens the performance and causes economic disadvantages.

[0025] As in the rooftop greening mat according to claim 4, the size of the mesh in the net body is 1 to 10 cm x 1
Preferably, it is 10 cm to 10 cm. If the size of one side of the mesh of the net body is less than 1 cm, there is no particular problem in terms of preventing soil runoff, but the problem that the weight increases and the workability deteriorates easily occurs. Thus, there is a possibility that the effect of preventing elongation of the three-dimensional network structure becomes poor. A more preferred range is 3
× 7 cm to 3 × 7 cm.

The thickness of the three-dimensional net-like structure is preferably 1 to 5 cm. When the thickness is less than 1 cm, there is a possibility that a plant, particularly a root, may be hindered, and the soil runoff preventing effect as expected may not be obtained. Further, when the distance exceeds 5 cm, there is a possibility that the workability is adversely affected.

The porosity of the three-dimensional network structure is 90 to 98%.
It is preferred that When the porosity is less than 90%,
The space for the soil is reduced, which may hinder the growth of the plant, and when it exceeds 98%, the mechanical strength tends to be poor.

The void diameter is preferably 3 cm or less. When it exceeds 3 cm, the amount of soil, sand, and pebbles that can pass through the void diameter increases, which may hinder the effect of preventing soil runoff.

In the greening method according to the sixth aspect, the rooftop greening mat according to any one of the first to fifth aspects is first laid on an inclined surface (roof) of a roof, for example.
This mat for rooftop greening is relatively lightweight because the three-dimensional network structure is formed of a continuous filament having a diameter of 0.1 to 5 mm made of a thermoplastic resin polymer, and is also rooftop because it is flexible. Laying work on an inclined surface is easy.

The soil is filled inside the three-dimensional network structure of the mat. In this soil, fertilizers and seeds can be mixed in some cases, and plant seedlings and lawns can be used in combination. Alternatively, after filling, sowing seeds or planting seedlings. The filled soil is firmly held in the voids of the three-dimensional network structure by a large number of continuous filaments that are intertwined with each other, forming the three-dimensional network structure. Spills can be minimized.

The seeds (or seedlings) begin to grow and grow in the soil with the roots entangled in a large number of continuous striatum constituting the three-dimensional network structure. As a result, the soil retention effect is further enhanced (the effect of preventing soil runoff is improved), so that grown plants are less likely to be washed away even when exposed to running water such as rainwater, and rooftop greening is performed. Can be effectively advanced.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

Manufacture of three-dimensional net-like structure (with net
The three-dimensional network structure used in the present invention can be efficiently manufactured by using, for example, the apparatus schematically shown in FIGS.

That is, as shown in the figure, a transport body (12) having an endless belt (10) running in one direction.
The vehicle is traveling in the same direction while a long net body (14) is placed on the vehicle. The net body (14) has flexibility, a mesh size of 5 cm × 5 cm, and is made of a synthetic resin (for example, polypropylene, polyethylene, polyester, polyamide, or the like).

Reference numeral (20) denotes a running net body (1).
A spinneret provided above 4), on the lower surface of which a number of spinning nozzles (for example, hole diameter: 0.5 mm, not shown) are arranged in rows. From this spinning nozzle, a melt of a thermoplastic resin, for example, a melt of a polypropylene resin is spun from a spinneret (20) as a continuous filament (15a), and falls naturally downward. In addition, the conveyance body (12) formed of the endless belt (10) is moving at a speed lower than the drop speed of the spun continuous linear body (15a) described above. Then, the continuous linear body (15a) is naturally dropped via the net body (14). In addition, as shown in FIGS. 3 and 4, the carrier (12) has a large number of plate-shaped uneven pieces (22) on its upper surface (the drop surface of the spun continuous filament (15a)). They are arranged side by side in the longitudinal direction of the endless belt (10) in the carrier (12).

The concave / convex piece (22) has a triangular cross section (22a) which protrudes upward and extends in the width direction (or a direction close thereto), and has a recess formed in the downward direction and is formed in the width direction (or close thereto). And a concave portion (22b) having an inverted triangular cross-section extending in the traveling direction is repeated in the traveling direction, and is made of rubber, metal, synthetic resin, or wood. The thickness of the finally obtained three-dimensional net-like structure largely depends on the distance from the top of the convex portion (22a) to the bottom of the concave portion (22b) in the uneven piece (22). In the above, the distance from the top of the convex portion (22a) to the bottom of the concave portion (22b) is 2 cm to 4 cm.
It is.

As a result, a large number of spun continuous filaments (15a) falling from the spinning nozzle are entangled with the vertical and / or horizontal filaments constituting the traveling net body (14), and are conveyed. (12) On the upper surface, irregularly upward and downward loops are drawn while intersecting each other and are sequentially accumulated (see FIG. 3).

Many spun continuous filaments (15a) dropped onto the uneven piece (22) gradually solidify. At this time, the spun continuous filaments (15a) are self-fused at intersections and spun with the net (14). The continuous filament (15a) is fused to each other. Then, by pulling the molded three-dimensional net-like structure away from the concave and convex pieces (22) while winding the net body (14), as shown in FIGS.
A rooftop greening mat (A) (thickness: 2 to 4 cm, porosity 97%) in which 4) and the three-dimensional network structure (15) are integrated is obtained.

The void size (30) in the rooftop greening mat (A) is 3 cm or less (preferably 3 mm to 3 c
m), but when such a void diameter (30) cannot be obtained in one step, the rooftop greening mat (A) obtained as described above is fed from the spinning nozzle to the rooftop greening mat (A). The spinning of the thermoplastic resin melt may be performed once or twice. That is, the rooftop greening mat (A) is put on the carrier (12) and run, and the continuous filament (15a) of the thermoplastic resin is spun from the spinning nozzle of the spinneret (20).
May be dropped directly on the upper surface of the mat (A). Thereby, the void diameter (30) of the mat (A) is obtained.
And a desired value (5 mm to 3 cm) can be obtained. By reducing the void diameter (30), the performance of preventing soil flow is improved, and a rooftop greening mat (A) having an excellent erosion prevention effect can be obtained.

When the roof greening mat (A) is constructed without the net (14), the mat (A) is manufactured by omitting the net (14) in the above embodiment. do it.

Manufacture of three-dimensional network structure (with nonwoven fabric)
Case) As a method of providing the nonwoven fabric on one of the front and back surfaces of the three-dimensional network structure, for example, the following method can be employed.

That is, as shown in FIG. 7, the transporter (1) provided with the endless belt (10) running in one direction.
Above 2), a spinneret (20) is installed, and on the lower surface of the spinneret (20), a large number of spinning nozzles (for example, a hole diameter: 0.5 mm, not shown) are arranged.

On the upper surface of the transporter (12), a large number of plate-shaped uneven pieces (22) are arranged in the longitudinal direction of the endless belt (10) of the transporter (12) in the same manner as in the above embodiment. Have been. The concave-convex piece (22) has a triangular cross-section protruding upward and extending in the width direction (or a direction close thereto), and a cross-section reversely formed by recessing downward and extending in the width direction (or a direction close thereto). Triangular recesses are repeated in the running direction (see FIGS. 3 and 4), and are made of rubber, metal, synthetic resin, or wood. The thickness of the finally obtained three-dimensional net-like structure greatly depends on the distance from the top of the convex portion to the bottom of the concave portion in the concave-convex piece (22). The distance from the top to the bottom of the recess is 2 cm to 4 cm.

From this spinning nozzle, a melt of a thermoplastic resin, for example, a melt of a polypropylene resin is fed into a spinneret (2).
0), spun as a continuous filament (15a), and falls naturally downward. In addition, the conveyance body (12) consisting of the endless belt (10) is the same as the above-described spun continuous linear body (15).
a) is moving at a speed lower than the falling speed of the continuous filament (15) on such a carrier (12).
a) is allowed to fall naturally. As a result, a large number of spun continuous filaments (15a) falling from the spinning nozzle are transported by the carrier (1).
2) While being intersected with each other on top of each other, they are sequentially accumulated in such a way as to draw irregular upward and downward loops.

Then, before the spun continuous filament (15a) dropped onto the uneven piece (22) is solidified (while still in a molten state), the spun continuous filament (15a) is placed on the spun continuous filament (15a). And a non-woven fabric (F) is stuck. That is, as shown in FIG. 7, the nonwoven fabric (F) is pressurized on the upper surface of the three-dimensional net-like structure composed of the spun continuous filaments (15a) and traveling in one direction. Thereby, the nonwoven fabric (F) is heat-sealed (heat-bonded) to the upper surface side of the three-dimensional network structure in a spot manner.

Many of the spun continuous filaments (15a) gradually solidify. At this time, the nonwoven fabric (F) and the spun continuous filaments (15a) are self-fused to each other at the intersection. As shown in FIG. 8, a roof greening mat (A) in which a nonwoven fabric (F) is bonded to one surface of a three-dimensional net-like structure (thickness: 2 to 4c)
m, porosity 97%).

The void size (30) in the rooftop greening mat (A) is 3 cm or less (preferably 3 mm to 3 c
m), but when such a void diameter (30) cannot be obtained in one step, the rooftop greening mat (A) obtained as described above is fed from the spinning nozzle to the rooftop greening mat (A). The spinning of the thermoplastic resin melt may be performed once or twice. That is, the rooftop greening mat (A) is put on the carrier (12) and run, and the continuous filament (15a) of the thermoplastic resin is spun from the spinning nozzle of the spinneret (20).
May be dropped directly on the upper surface of the mat (A). Thereby, the void diameter (30) of the mat (A) is obtained.
And a desired value (5 mm to 3 cm) can be obtained. By reducing the gap diameter (30),
The ability to prevent soil flow is improved, and a rooftop greening mat (A) having an excellent erosion prevention effect can be obtained.

Laying of the rooftop greening mat (A) and rooftop greening The rooftop greening mat (A) obtained as described above is cut into a suitable size (for example, 2 m × 2 m), and a large number of these are cut on the rooftop. Laying on the inclined surface at. Hereinafter, this point will be described with reference to FIGS.

First, a water-impermeable waterproof sheet (polyvinyl chloride sheet, EVA sheet, etc., 0.5 to 2 mm) is laid on the roof on which the rooftop greening mat (A) of the present invention is laid, and bonded. This waterproof sheet is fixed to the top surface of the roof using an agent or a pin.

On the waterproof sheet laid on the roof, many of the mats (A) of the present invention are laid without gaps (or with the ears overlapped with each other), and The mats (A) are fixed one by one with an anchor pin (not shown) (or with an adhesive) so as not to move.

When the mat (A) has been laid and fixed on the entire upper surface of the roof, the soil (D) for growing plants is put on the mat (A), and the soil (D) is placed in the voids in the three-dimensional network structure of the mat (A). Fill with (D) and then mat (A)
Make an embankment of about 2 to 3 cm on the top. After the embankment is created, sowing and planting are performed. In addition, seeds (fertilizer if necessary) may be mixed in the soil (D) in advance.

The seeds in the soil (D) germinate soon and continue to grow further, and after a while, the roof top is greened by the plants, as shown in FIG.

Soil filled for plant growth (D)
Is firmly held in the space of the three-dimensional network structure by a large number of continuous filaments intertwined with each other constituting the three-dimensional network structure, so that the outflow of the soil (D) by running water such as rainwater is minimized. Can be minimized. Moreover,
Since the root of the grown plant grows in the soil (D) while being entangled with many continuous striatum constituting the three-dimensional network structure,
The effect of retaining the soil (D) is further enhanced (the effect of preventing the outflow of the soil (D) is improved), and even if the grown plants or the soil (D) itself is exposed to running water such as rainwater, It is less likely to be washed away and the rooftop can be effectively greened.

[0054]

According to the present invention, it is possible to provide a rooftop greening mat in which soil filled therein for growing plants is not easily washed away by running water such as rainwater.

According to the greening method of the present invention, for example, greening of the roof of a house (house) or a building can be effectively promoted.

[Brief description of the drawings]

FIG. 1 is a side view showing an apparatus for manufacturing a rooftop greening mat according to the present invention.

FIG. 2 is a perspective view of the previous figure.

FIG. 3 is an enlarged view of a main part of FIG. 1;

FIG. 4 is a perspective view showing a state in which the net body travels while being placed on the uneven pieces.

FIG. 5 is a perspective view of the rooftop greening mat of the present invention, showing a state in which a net body and a three-dimensional net-like structure are integrally formed.

FIG. 6 is an enlarged sectional view of a main part showing a state in which a continuous filament forming a three-dimensional net-like structure extends from one direction to the other while winding the net;

FIG. 7 is an enlarged sectional view of a main part showing a state in which a continuous filament forming a three-dimensional network structure is thermally bonded to a nonwoven fabric and extends from one direction to the other direction.

FIG. 8 is a perspective view of a rooftop greening mat according to another embodiment of the present invention, showing a state in which a nonwoven fabric and a three-dimensional net-like structure are integrally formed.

FIG. 9 is a schematic explanatory view showing a state in which many rooftop greening mats are laid on a waterproof sheet laid on a roof.

FIG. 10 is a partially enlarged view of the previous figure.

FIG. 11 is a schematic explanatory view showing a state in which the roof is greened by plants.

[Explanation of symbols]

 A: rooftop greening mat 14: net 15: three-dimensional network structure 15a: continuous filament 30: void diameter

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takanori Shinagawa 12-23 Miyamachi, Izumiotsu-shi, Osaka F-term (reference) 2B022 AB04 BA02 BA12 BA21 BA23 BB02 2D044 DA12

Claims (6)

[Claims] 1. A rooftop greening mat having a space capable of holding soil for growing a plant and preventing the soil filled in the space from flowing out by running water such as rainwater. A large number of continuous filaments each having a diameter of 0.1 to 5 mm made of a resin polymer intersect with each other and bend irregularly or regularly in a horizontal direction and a thickness direction, respectively, and extend from one side to the other side. A roof greening mat, wherein the plurality of continuous filaments are formed of a three-dimensional net-like structure fused at points where they intersect with each other. 2. A rooftop greening mat having a space capable of holding soil for growing a plant and preventing the soil filled in the space from flowing out by running water such as rainwater. A large number of continuous filaments each having a diameter of 0.1 to 5 mm made of a resin polymer intersect with each other and bend irregularly or regularly in a horizontal direction and a thickness direction, respectively, and extend from one side to the other side. In addition, the multiple continuous filaments are fused at a point where they intersect with each other, and a three-dimensional net-like structure, and a flexible net attached to one of the front and back sides of the three-dimensional net-like structure. For the rooftop greening, wherein the continuous filaments are formed by winding up the vertical and / or horizontal stripes constituting the net and the net and the three-dimensional net-like structure are integrated. Tsu door. 3. A rooftop greening mat having a space capable of holding soil for growing a plant and preventing the soil filled in the space from flowing out by running water such as rainwater. A large number of continuous filaments each having a diameter of 0.1 to 5 mm made of a resin polymer intersect with each other and bend irregularly or regularly in a horizontal direction and a thickness direction, respectively, and extend from one side to the other side. Along with that, the multiple continuous filaments are formed of a three-dimensional network structure fused at points crossing each other, and a nonwoven fabric attached to one of the front and back sides of the three-dimensional network structure. Characteristic rooftop greening mat. 4. A net having a net size of 1
The rooftop greening mat according to claim 2, wherein the mat is 10 cm × 1 cm to 10 cm. 5. The three-dimensional net-like structure has a thickness of 1 to 5 cm,
The rooftop greening mat according to any one of claims 1 to 4, wherein the porosity is 90 to 98% and the void diameter is 3 cm or less. 6. The rooftop greening mat according to any one of claims 1 to 5, wherein a waterproof sheet is laid on the upper surface of the base, which is the roof upper surface, and then laid. A greening method characterized by filling the soil with seeds or seedlings, or after filling the soil, sowing seeds or planting seedlings.